Agricultural Waste Statistics and Modeling: UK Approach

Ireland does not report agricultural waste statistics under NACE Rev.2 Section A. Models are used to estimate waste generation. The UK utilizes the Agricultural Waste Estimates Model developed by Marcus Hodges and BDB Associates. This model incorporates national datasets, on-farm surveys, and a combination of top-down and bottom-up approaches to derive unit weight estimates for various agricultural activities. Calculation methodologies involve using Microsoft Excel for mass balance and farm practice approaches. For further details, refer to the summary table provided by Jane Brogan from the Resource Use Unit at OCLR.

• Agricultural Waste
• Statistics
• Modeling
• UK Approach

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1. Agricultural waste statistics Requirement to report for the Waste Statistics Regulations (WStatR, 2150/2002) Ireland does not report on NACE Rev.2 Section A: Agriculture, forestry and fishing 01+02+03. Data not collected specifically on these economic activities therefore require models to estimate quantities of waste generated per year England, Wales, Scotland and Northern Ireland use a model developed by the UK Environment Agency with slight variations

2. UK Agricultural Waste Estimates Model Based on research work undertaken Marcus Hodges and BDB Associates (2001) Later expanded with on-farm surveys in 2003.

3. UK Model Approach Data Outputs Data Inputs 1National Datasets 2Data from literature, research, trade suppliers, agricultural advisors and farmers Microsoft Excel Worksheets Top down approach and/or Bottom up approach National agricultural waste estimates (tonnes per annum) CSO Agricultural Census Farm Data Surveys

4. Calculation methodologies Using Microsoft Excel Top down mass balance approach and bottom-up farm practice approach to derive unit weight estimates Top down approach e.g., quantity of agrochemical packaging placed on the market on a specific year giving unit weight estimate placed per hectare of cropping area Bottom-up approach e.g., use figures for pesticide washings per hectare then x by the hectares of each crop type to gives tonnes per annum; sheep dip gm of a.i. Per sheep x number of sheep etc; scrap tyres based on new tractor sales and scrap page rate etc See summary sheet for data requirements

5. Summary Table (Hand-out) Thank you Jane Brogan Resource Use Unit OCLR j.brogan@epa.ie 053 9167251